700X multifunctional water pump control valve manufacturer Shanghai Gaoqiao Valve [Baidu]

Multifunctional water pump control valve
Structural features and uses

bMultifunctional water pump control valve
consists of main valve, solenoid pilot valve, needle valve, ball valve, one-way valve, and travel switch , micro-shaped filter and pressure gauge form a hydraulic control take-over system. When the water pump needs to stop working, the main valve is closed by the inlet pressure first, and then the water pump stops running. The remainder is closed by return water. It can prevent water hammer from happening.
This product is controlled by a solenoid pilot valve and does not require other devices and energy. Save energy, easy maintenance, smooth pump shutdown. Solenoid valves can use alternating current or direct current.
This series of valve products are widely used in water supply pipe network systems such as high-rise buildings and living areas, as well as urban water supply projects.
Working Principle
b
b When the working valve of the water pump supplies water to the downstream, the solenoid pilot valve is fully opened, the needle valve is adjusted to the appropriate opening, and the upstream water enters the main stream through the needle valve and one-way valve. The valve control chamber flows out through the solenoid pilot valve. At this time, the pressure in the main valve control chamber keeps the main valve at the appropriate opening and maintains normal water supply downstream.
When the water pump stops working, the solenoid pilot valve closes first, the main valve control chamber stops draining water, the pressure in the control chamber increases, and the main valve begins to close. When closed, the upper travel switch of the main valve outputs a pump stop signal and the water pump stops running. At this time, the downstream return water enters the main valve control chamber through the one-way valve, the pressure in the control chamber increases, and the main valve is closed.
bMain technical parameters
b br= Nominal pressure
Shell test pressure
Sealing test pressure
Applicable medium
Medium temperature (℃)



r water